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arXiv 1503.05453physics.chem-ph
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有机小分子的可转移原子多极机器学习模型

Transferable atomic multipole machine learning models for small organic molecules

Tristan Bereau, Denis Andrienko, O. Anatole von Lilienfeld

摘要:

分子静电势的精确表示是有效评价分子间相互作用的关键。在这里,我们介绍了一个机器学习模型的多极系数的原子类型H,C,O,N,S,F和Cl在任何分子构象。该模型是根据原子在不同化学环境中的量子化学结果进行训练的,这些原子来自数千个有机分子。中性,阳离子和阴离子分子电荷状态的系统中的多极子处理与个人的模型。通过计算近1,000种二聚体的分子间相互作用能和苯晶体的结合能,说明了模型的预测精度和适用性。

英文摘要:

Accurate representation of the molecular electrostatic potential, which is often expanded in distributed multipole moments, is crucial for an efficient evaluation of intermolecular interactions. Here we introduce a machine learning model for multipole coefficients of atom types H, C, O, N, S, F, and Cl in any molecular conformation. The model is trained on quantum chemical results for atoms in varying chemical environments drawn from thousands of organic molecules. Multipoles in systems with neutral, cationic, and anionic molecular charge states are treated with individual models. The models' predictive accuracy and applicability are illustrated by evaluating intermolecular interaction energies of nearly 1,000 dimers and the cohesive energy of the benzene crystal.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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